HV Substation/Relay Testing & Commissioning

Location: Nationwide Travel (90%)
Employment Type: Direct Hire / Full-Time

About the Role:

We're hiring experienced High Voltage Commissioning & Testing professionals - from Technicians to Managers - to support ongoing substation and relay commissioning projects across the U.S.

If you have hands-on experience with relay protection testing, transformer diagnostics, and substation acceptance/maintenance, this role offers an exciting opportunity to work on complex, high-voltage systems while traveling to major project sites.

Key Responsibilities:

• Perform relay protection testing (SEL and GE-L90 relays) using Doble 6150 or equivalent test equipment

• Write and execute relay test plans and test reports

• Lead or support substation commissioning, acceptance, and maintenance testing

• Conduct testing on substation apparatus including:

  • Transformer & Breaker Power Factor Testing

  • Breaker Timing Testing

  • Transformer External Device Protection Testing

  • VLF Withstand and Tan Delta Testing

  • CT Ratio & Burden Testing

  • CVT Testing

  • Battery Capacity Load Bank Testing

• Interpret and apply NETA ATS/MTS, IEEE, ASTM, and IEC standards

• Maintain compliance with OSHA 1910.269, NFPA 70E (2024), and company safety policies

• Train, mentor, and develop junior technicians (for Manager-level candidates)

• Collaborate with utilities, EPCs, and clients to ensure project quality, safety, and successful energization

Qualifications:

• 3 years of experience in high-voltage substation testing & commissioning (Manager level typically 8-10 years)

• Hands-on experience with Doble, Omicron, or Manta test sets

• Familiarity with SEL and GE relay logic and schemes

• Strong knowledge of NETA ATS/MTS standards and testing procedures

• NETA Level III or IV certification preferred

• Must have or complete within 30 days:

  • OSHA 30 (Construction)

  • NFPA 70E (2024 Edition)

• Substation Maintenance, Testing, or Operating certifications a plus

• RTAC programming experience a plus (for leadership roles)

• Willingness to travel up to 90% (rotational schedules available)

Oscar Associates Limited (US) is acting as an Employment Agency in relation to this vacancy.